AH 5 00 Pr ogr am m ing Ma n ua l2 - 22.1 Introduction of DevicesThis section gives an account of values/strings processed by the PLC. It also describes thefunctions of devices which include input/output/auxiliary relays, timers, counters, and data registers.2.1.1 Devise List2.1.1.1 AH500 Basic CPU Modules (AHCPU500/510/520/530)Type Device name Number of devices RangeBitdeviceInput relay X1024 (AHCPU500) X0.0~X63.152048 (AHCPU510) X0.0~X127.154096 (AHCPU520) X0.0~X255.158192 (AHCPU530) X0.0~X511.15Output relay Y1024 (AHCPU500) Y0.0~Y63.152048 (AHCPU510) Y0.0~Y127.154096 (AHCPU520) Y0.0~Y255.158192 (AHCPU530) Y0.0~Y511.15Data register D262144 (AHCPU500) D0.0~D16383.15524288 (AHCPU510) D0.0~D32767.151048576(AHCPU520/530) D0.0~D65535.15Link register L262144 (AHCPU500) L0.0~ L16383.15524288 (AHCPU510) L0.0~ L32767.151048576 (AHCPU520/530) L0.0~ L65535.15Auxiliary relay M 8192 M0~M8191Special auxiliary relay SM 2048 SM0~SM2047Stepping relay S 2048 S0~S2047Timer T 2048 T0~T2047Counter C 2048 C0~C204732-bit counter HC 64 HC0~HC63WorddeviceInput relay X64 (AHCPU500) X0~X63128 (AHCPU510) X0~X127256 (AHCPU520) X0~X255512 (AHCPU530) X0~X511Output relay Y64 (AHCPU500) Y0~Y63128 (AHCPU510) Y0~Y127256 (AHCPU520) Y0~Y255512 (AHCPU530) Y0~Y511Data register D16384 (AHCPU500) D0~D1638332768 (AHCPU510) D0~D3276765536 (AHCPU520/530) D0~D65535Special data register SR 2048 SR0~SR2047Link register L16384 (AHCPU500) L0~L1638332768 (AHCPU510) L0~L3276765536 (AHCPU520/530) L0~L65535Timer T 2048 T0~T2047Counter C 2048 C0~C204732-bit counter HC 64 (128 words) HC0~HC63Index register E 32 E0~E31Constant*Decimal system K 16 bits: -32768~3276732 bits: -2147483648~2147483647Hexadecimal system 16# 16 bits: 16#0~16#FFFF32 bits: 16#0~16#FFFFFFFFSingle-precisionfloating-point number F 32 bits: ±1.17549435-38 ~±3.40282347+38
